baber/WOPTO huggingface dataset:
Patent GB-1235705-A (GB)
Title: Apparatus for testing electrical insulation
IPC: G01R27/02
Filed: 1968-06-13
Abstract: 1,235,705. Testing electrical insulation. FURUKAWA DENKI KOGYO K. K. June 13, 1968 [June 15, 1967; May 28, 1968], No.28277/68. Heading G1V. Apparatus for testing electrical insulation comprises two impedances 12, 14, Fig. 3 across one of which a signal is produced when an insulation fault is detected, the voltages across the impedances being passed to respective inputs of a selecting circuit 17 shown in detail in Fig. 1 where they are compared in a comparator 43 which provides an output only on receipt of a voltage from one, but not both, of the impedances, the comparator output being passed to a discriminator 44 which blocks pulses of less than a predetermined size. The selecting circuit 17 prevents an output being given in response to noise or stray signals which result in voltages across both impedances 12, 14 substantially simultaneously. Fig. 3 shows apparatus for testing an insulated cable 11 by drawing it through a bath of semiconducting liquid 22, e.g. distilled water. A high voltage electrode 26 is disposed at the centre of the bath and earthed electrodes 29, 20 at each end, the cable core 24 being earthed. Two annular electrodes 27, 28 surround the cable, forming in conjunction with cable core 24 capacitors to earth with the cable insulation as a dielectric. In parallel with these capacitances are respective capacitors and impedances 31, 12 and 32, 14. A partial discharge in the cable insulation due to an insulation fault in the portion of the cable within one of the electrodes 27, 28 causes a pulse signal to be produced across the respective impedance 12 or 14 and this signal is passed to selecting circuit 17. The pulse signal is amplified at 41' or 41" Fig. 1 and shaped at 42' or 42" before being passed to comparator 43. In another embodiment Figs. 5-7, (not shown), each electrode 27, 28 is replaced by two electrodes which are either spaced apart along the cable (as 27, 127), Fig. 5 (not shown) or each constituted by a half-annulus Fig. 7 (not shown). Each such electrode has an associated capacitor and impedance, so that two bridge circuits are formed (as 4', 3', 7', 6' ) Fig. 5 (not shown) which can be balanced in the absence of insulation faults. The selecting circuit 17 receives out-of-balance signals from the two bridges.
Patent GB-796699-A (GB)
Title: Floating screens for tanks
IPC: B65D88/34
Filed: 1955-10-05
Abstract: 796,699. Tanks. BRITISH PETROLEUM CO., Ltd., and CHAMPAGNAT, A. Oct. 5, 1955 [Oct. 6, 1954; Oct. 18, 1954; Nov. 20, 1954; March 26, 1955; May 13, 1955], No. 28330/55. Class 69 (1). Evaporation of stored liquid in vessel 4 (see Fig. 1) is reduced by the use of a flexible floating blanket 1 with a flexible apron 12 around its periphery which is self-supporting so as normally to be vertical, but is flexible enough to prevent jamming due to uneveness of the vessel walls. The blanket 1 may comprise a sheet 8 of polyvinyl chloride 0.1 to 0.2 mm. thick supported by floats 9 made from the same material, and a metal netting 16 secured by hooks 16a, to prevent accumulation of electric charges. A gauging orifice 44 may be disposed beneath vent 45 in the vessel, and the blanket may be secured against rotation by wires 47 passing through apertures 49 in it. Fig. 4 shows the method of construction of blanket 1 and apron 12; a moulded film 30 is secured to film 34 so as to form cells 29 and the whole fixed at 35 to the upper film 36 of the blanket; the apron is secured to the latter by angle-pieces 39 and reinforced by film 40 folded towards the flexible wall at 41. The blanket may be built in sections which are introduced, rolled up, into the vessel before being secured together as by sliding fasteners.
Patent GB-1309456-A (GB)
Title: Method for separating naphthenic acids from mixtures containing such  acids and hydrocarbons
IPC: C07C51/48
Filed: 1970-06-11
Abstract: 1309456 Naphthenic acid separation NYNASPETROLEUM AB 11 June 1970 [13 June 1969 13 March 1970] 28357/70 Heading C2C [Also in Division C5] A method for separating a naphthenic acid from a mixture containing such an acid and hydrocarbons, such as high boiling mineral oils, comprises treating the mixture with an extraction agent for the acid at a temperature of from 10‹ C. below the boiling point of the extraction agent to slightly above the boiling point to form a solution of the alkali metal salt of the acid, the extraction agent comprising an alkali metal hydroxide and a mixture of water and methanol which contains at least 70 wt. per cent methanol, and the ratio between the crude mixture and the extracting agent being from 5 :1 to 1 : 1, separating the solution from the remainder of the hydrocarbon-containing mixture and, if desired, treating the solution with a stronger acid to liberate the naphthenic acid. The hydrocarbon phase may be washed with a solvent, e.g. methanol, the solvent driven off by distillation and the residual oil optionally redistilled and bleached to produce a neutral lubricating oil.
Patent GB-767010-A (GB)
Title: Improvements in or relating to photo-telegraph or facsimile receivers
Inventor: BELL JOHN
IPC: H04N1/23
Filed: 1953-10-15
Abstract: 767,010. Copying-telegraph receivers. MUIRHEAD & CO., Ltd. Oct. 8, 1954 [Oct. 15, 1953; June 4, 1954], Nos. 28454/53 and 16626/54. Class 40 (3). In a copying-telegraph receiver in which the recording mechanism as a whole is enclosed in a substantially sealed container and the roll of moist electro-chemical recording paper is disposed in a sealed compartment within the container, the temperature of the moving parts is maintained slightly above that of the interior of the container which has its inner surfaces lined with a porous material which does not react chemically with the solution with which the paper is impregnated, so that condensed moisture is conducted to parts of the container remote from the operative parts of the receiver. As shown, the supply roll 7a, the recording mechanism comprising the drum 10 with helical electrode 11 and a fixed linear electrode 13 and the associated feed rollers 17, 18 are enclosed in a container 2 having a lid with frame portions 3, 5 through which the paper 7 passes. The roll 7a is mounted in a compartment 8 provided with sealing means 6 and the paper is fed between a frame member 3a and a resilient spring 9 to the recording position. A heater 24 with thermostat control 29 is located near the drum 10, but in a modification, Fig. 2 (not shown), a heating current may be passed through the helical electrode by a battery and brushes engaging slip rings on the flat end of the drum. Moisture within the compartment is absorbed by a lining 19 of a porous material chemically inactive in relation to the chemical solution impregnating the recording paper and moisture not absorbed may be fed by a pipe 22 to a trough 23 from which it may be drawn off by a plug 25.
Patent GB-616690-A (GB)
Title: Improvements in or relating to cigarette rests
IPC: A24F19/00
Filed: 1946-11-07
Abstract: 616,690. Smokers' ash-trays. GISSING, S. J. Nov. 7, 1946. No. 28621. [Class 130] A cigarette rest and extinguisher comprises a cigarette-receiving hole 18 in the wall of a smoke chamber 17, a valve 26 which is pressed inwards by the lighted end of a cigarette when inserted in the hole, and a restricted air vent 15; the cigarette is thus extinguished after a period of several minutes. The wall is thickened by internal and external buttresses at the holes 18 four of which in the arrangement described are each covered by a valve 26 pivoted to a cranked removable wire ring 29. The'chamber is mounted on feet 35 to allow air to enter through a gauze cone 16, and is closed by a lid 12 having an ash receptacle 13. A further ash receptacle 38 is also provided.
Patent GB-889497-A (GB)
Title: Improvements in or relating to dial switches
Inventor: HIGHAM KEITH
IPC: H04M1/34
Filed: 1959-08-22
Abstract: 889,497. Impulse transmitters. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Aug. 11, 1960 [Aug. 22, 1959], No. 28768/59. Class 40 (4). In a dial switch in which impulses are sent during the return motion after a fixed lostmotion period, impulsing springs are actuated by a cam-operated impulsing member, the cam of which is provided with a network of tracks engageable by the impulsing member; the impulsing member being displaced by one cam track during the forward motion of the dial and being returned by one of a plurality of defined cam tracks during the return motion. A nylon disc 13, stuck to one face of the main gear-wheel 10, has an outer, essentially sinusoidal, groove 16 and an inner circular groove 14 cut concentric with the main shaft 11. A plurality of grooves 15, tangential with the inner groove, connect the latter to the inward facing peaks of the outer groove. The spring set consists of a heavy contact-carrying spring 17, a light contact-carrying spring 18 and a flexible arm 19. The latter carries a lug 21 through which passes a pin, the lower part 22 (Fig. 2), engaging the grooves and the upper part 22A engaging a lug 20 on light spring 18 so as to open the contacts when the lower part 22 of the pin is in one of the outward facing peaks of groove 16. When the finger-plate 24 is rotated, flexible arm 19 rides along groove 23 (Fig. 3), and then around groove 14 until the finger stop is reached. Upon the release of the finger-plate, pin 22 traverses the first tangential groove it finds (lost motion period) during its return around groove 16 each time an outward facing peak is encountered (Fig. 6) an impulse is transmitted. In a further embodiment (Figs. 7 and 8, not shown), a cylinder is mounted on the worm wheel (9 in Fig. 1), and the spring set is so mounted that a flexible arm thereof can engage suitable grooves cut in the outer surface of the cylinder, the groove occupied by the arm during the return motion again being sinusoidal. A spring-loaded arm may replace the flexible arm of the above embodiments.
Patent GB-1091929-A (GB)
Title: Tool holder
IPC: B25G3/02
Filed: 1965-07-07
Abstract: 1,091,929. Holders for hand tools. E. A. KING. July 5, 1966 [July 7, 1965], No. 28881/65. Heading B4K. A tool holder comprises a cylindrical sleeve 1 clamped at one end to a handle 4 and having welded to the other end a planar-sided, faceted disc 5, there being provided a U-shaped shackle 11 of which the free ends overlie planar faces of the disc and are pivoted at the centre of the disc, the shackle being adapted to clamp the tang 13 of the tool between the radially inner surface of its base 12 and any one of the facets 8 by a pivoting movement of the shackle. The axis 7 of the sleeve 1 intersects the facet 8<1> diametrically opposed to the handle at twothirds of the distance between the two ends of the facet 8<1> so that two angular positions of the tool relative to that axis are available by use of any one facet. The sleeve 1 is split at the open end 2 and means 3 are provided for drawing together the split ends.
Patent GB-321525-A (GB)
Title: Improvements in and connected with lifting jacks
IPC: B66F3/18
Filed: 1928-10-09
Abstract: 321,525. Hill, S., and Hill, E. Oct. 9, 1928. No Patent granted (Sealing fee not paid). Jacks. - A multipleextension screw jack of the kind having screwed members telescoping one within the other and a gear wheel at the bottom of the outermost member has a spring-pressed projection engaging a groove in the intermediate member so as to prevent it from rotating until it is fullv extended or withdrawn. The outer sleeve 3 has an enlargement 3a at its upper end resting in an enlargement at the upper end of the casing 5 and is rotated by a toothed wheel 4 at its lower end. The upper end of the outer sleeve has an internal screw thread 13 engaging the screwed intermediate sleeve 2 which has a similar engagement with the crutch stem 1. A longitudinal groove in the intermediate sleeve is engaged by a projection 19, Fig. 6, on a plate 19b pivotally mounted on the casing and having an apertured extension 19<c> engaged by a locating stud 21 carrying a spring pressing against the plate. In operation the projection is engaged with the groove to prevent the rotation of the intermediate member except at the upper and lower limits of movement when it is withdrawn from the groove by the tapered ends of the threads.
Patent GB-742575-A (GB)
Title: Improved method of, and means for, melting metal swarf
Inventor: CROFT ARTHUR
IPC: F27B1/20
Filed: 1951-12-11
Abstract: 742,575. Reducing ores; methods of melting metals. CROFTS (ENGINEERS), Ltd. Aug. 8, 1952 [Dec. 11, 1951], No. 28990/51. Classes 72 and 82(1). [Also in Group XII] Swarf or other powdered or granular metal, or pulverized ore, is introduced into a shaft furnace at a point immediately above the melting zone so that it is carried down into the melting zone by the movement of the main charge in order to prevent its ejection by the draught before melting, and to reduce the time in which it is subjected to oxidation and sulphur absorption. As shown, the material is delivered from a feed chamber 13 to a recess 9 in the furnace lining 5 by means of a feed ram 14 reciprocated by a motor 15.
Patent GB-210741-A (GB)
IPC: F01M11/00
Filed: 1923-11-17
Abstract: 210,741. Becker, G. Feb. 2, 1923, [Convention date]. Splash-guards.-In a multi-cylinder internalcombustion engine, a partition k is disposed between the crank case and two cylinders in which the pistons move in opposite directions, the cylinders being in communication with each other through a passage i. The air beneath the pistons moves backwards and forwards through the passage i, thus reducing the transfer of air and oil from the crank case to the cylinders through the slots h<3>, h<4> provided for the passage of the connecting-rods. A disc valve or throttle m is mounted in the passage i to regulate the transfer of lubricant from the crank case, and the passage may be provided with a device for cooling the air passing between the cylinders.
Patent GB-404773-A (GB)
Title: Improvements in or relating to boots and shoes and the method of making same
IPC: A43B13/41
Filed: 1932-10-18
Abstract: 404,773. Boots &c. HENDERSON & SONS, Ltd., D., and HENDERSON, R. A., 340, St. Saviour's Road East, Leicester. Oct. 18, 1932, No. 29122. [Class 17 (ii).] In machine sewn footwear, the toe portion of the insole 1 is split to form two flaps 3 and 4, between which is enclosed a metal or other plate 2 to serve as a clinching plate for the lasting tacks and as a stiffener in wear. The edges of the plate are clear of the stitches which secure the upper and insole together. The heel end of the insole, as has previously been proposed, may also be split and a clinching plate inserted between the flaps so formed. This plate may be removed after lasting, or may be permanently incorporated in the shoe. Two or more plates may be used, both at the toe and heel.
Patent GB-355990-A (GB)
Title: Improvements in or relating to teazle brushing machines
IPC: D06C11/00
Filed: 1930-09-30
Abstract: 355,990. Finishing fabrics. HARRISON, W. P., 48, Upper Brook Street, and BELL, G., 18, Manor Road, Levenshulme, both in Manchester. Sept. 30, 1930, No. 29211. [Class 42 (ii).] Pile or nap, raising.-Teasles D are held concentrically on a spindle A by wires C joining points on the periphery of a disc B fixed on the spindle to points on the periphery of a disc E which is rotated to tighten the wires and then locked on the spindle.
Patent GB-174162-A (GB)
Title: Improvements in or relating to buffing or scouring rolls
IPC: B24D9/04
Filed: 1920-10-15
Abstract: 174,162. Hallam, H., and British United Shoe Machinery Co., Ltd. Oct. 15, 1920. Wheels.-The resilient backing of a scouring or buffing roll for boots and shoes comprises calico or other woven-fabric sheets 14, which may be in the form of discs, mounted side by side on a central metal tube 2. Between the discs are placed paper or fibre washers 16, and the resiliency of the backing is controlled by variation of (a) the degree of compression applied to the discs, (b) the relative diameters of the discs and washers, (c) the relative number and arrangement of discs and washers, and (d) the texture of the discs; hard rolls are made by omitting the washers. The abrasive covering 3 is held in position by clamping-fingers 8 adapted to be depressed into discs of rubber and felt 10, 12 located at the ends of the roll, as described in Specification 22001/95. In order to permit rotation of the discs 10, 12 to present fresh surfaces to the fingers 8, thin metal discs 18 are placed between the fabric discs and the felt discs 12. Specification 13116/96 also is referred to.
Patent GB-893630-A (GB)
Title: Device for carrying a fire extinguisher on the back
IPC: A62C15/00
Filed: 1960-08-25
Abstract: 893,630. Firemen's personal equipment. RYSER, J. Aug. 25, 1960 [July 27, 1960], No. 29410/60. Class 47. A frame (3 and 10), for carrying a fire extinguisher on a person's back, has spare pressure refills' clips 13, shoulder straps 9, a movable member 21 located (in use) above the extinguisher's starting button (not shown) for pushing said button, and lever and cam means 31, 31<SP>1</SP> operable manually by the person carrying said frame for actuating said member 21 via the connecting members 20 and 25.
Patent GB-675191-A (GB)
Title: Improvements in and relating to dynamoelectric machines
IPC: H02K27/06
Filed: 1948-11-12
Abstract: 675,191. A.C. commutator machines. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 12, 1948 [Nov. 14, 1947], No. 29454/48. Class 35. An amplidyne is operated as an A.C. generator or A.C. motor by providing capacitance for tuning the inductive winding of the machine. As an A.C. generator, the frequency is solely dependent upon the frequency of the exciting agency and independent of the speed and, as an A.C. motor, the amplidyne operates with a variable speed depending on the adjustment of the control field. Fig. 2 shows an amplidyne used as an A.C. generator having quadrature or primary brushes 2, 3 short circuited by a conductor 4, and direct or secondary brushes 5, 6 in series with a field compensating winding 13 and a load. The exciting circuit consists of a control field winding 9, a variable resistance 11 and a condenser 15 all in series and supplied from an A.C. source 12. With this arrangement the frequency of the generated E.M.F. is 5-20 cycles per second. For higher frequencies up to 200 cycles an additional condenser is inserted in the short-circuiting conductor 4 as in Fig. 3 (not shown). For frequencies above 200 cycles all the inductive circuits of the machine must be tuned as in Fig. 4 (not shown). Voltages of irregular wave-form can be generated by providing two field control systems, one fed from A.C. and the other fed from D.C., and, by saturating the D.C. fed field winding a flattopped resultant voltage wave may be produced Fig. 8 shows an amplidyne used as an A.C. motor which starts up as a series motor due to a series starting field winding 55 in series with the direct or secondary brushes 45, 46, and with field compensating winding 47, 48. Immediately upon starting the motor is converted into an amplidyne-type motor. In a modified form, an A.C. amplidyne motor is used for speed regulation with a low energy consumption by substituting the variable resistance 53 in Fig. 8 by a governor controlled contact system 73 in Fig. 9 (not shown). Specifications 539,835 and 675,192 are referred to.
Patent GB-981663-A (GB)
Title: A shaping device
Inventor: KANOOKOV NIKOLAI DANILOVICH
IPC: B21L9/02
Filed: 1963-07-25
Abstract: 981,663. Making track links for track laying vehicles; rolling. MOSKOVSKOE VYSHEE TEKNICHESKOE UCHILSHCHE IM. BAUMANA. July 25, 1963, No. 29454/63. Headings B3A and B3M. Apparatus for shaping metal articles comprises pairs of moulds 3, 4 hinged together at 12 and attached to a conveyer 5, and means 14 for applying deforming pressure to the articles 1 within the moulds. These articles 1 are preferably track links for tracked vehicles which are pre-formed by drop forging and whilst still hot are placed in the moulds. The latter are spring biased to open position and are closed by a roller 24 which is arranged to operate a switch 26 to stop the apparatus if the moulds do not close completely. The deformation is produced by rollers 14 backed by further rollers 15 and mounted on brackets 16 pivoted at 16<SP>1</SP> to links 17 adjustable by screws 18. During rolling the moulds are maintained closed by rollers 21 and are supported on rollers 20 carried by a chain running over pulleys 12a. The conveyer 5 is driven by motor 6 through clutch 7, worm gear 8 and coupling 9.
Patent GB-1112280-A (GB)
Title: Gas lighter
IPC: F23Q2/167
Filed: 1965-07-12
Abstract: 1,112,280. Gas lighter valve. A. RACEK. 12 July, 1965 [14 July, 1964; 15 Oct., 1964],No. 29484/65. Heading F4F. In a gas lighter a disc of elastic material 14 is disposed below a porous throttle 11 so that the gas regulating properties of the throttle are flattened. The throttle and valve assembly of the lighter are situated in a pot-shaped casing 2 formed in an upper part of the gas reservoir 1 and comprise a screw member 4, used to adjust the pressure on the throttle and hence vary the flame height, and a hollow valve stem 5 spring loaded within the member 4 which at its lower end has a plug 6 bearing against a cup-shaped valve disc 8 having an opening 9. Beneath the valve disc is situated the throttle 11 and below this a rigid gas impermeable disc 12 and the gas permeable elastic disc 14 which rest on a flange 13 surrounding a gas inlet opening 16 at the bottom of the casting 2. A sealing ring 10 prevents escape of gas through the screw thread 3. In a modification. Fig. 2 (not shown), an impermeable elastic disc 30 having gas passages 31 is situated below the throttle 11 and the downwardly extending edge 33 of the valve disc 28 prevents escape of gas around the edges of the disc. In the embodiment of Fig. 3 (not shown) the gas impermeable, elastic disc 42 has the form of a cup with upstanding edges 41 and the throttle 11 lies within the cup beneath a cupshaped valve disc 38. The gas passes to the valve stem 35 via a toothed collar 36. The gas impermeable elastic discs may be made of extruded plastics material.
Patent GB-295025-A (GB)
Abstract: 295,025. Du Pont de Nemours & Co., E. L., (Assignees of Kern, J. G., and Sala, C. J.). Aug. 4, 1927, [Convention date]. Dye preparations.-Aliphatic amines containing one or more oxyalkyl or dioxyalkyl groups, for example oxyethyl groups, attached to the nitrogen atom are incorporated in vat dye pastes; more even dyeings are obtained particularly when padding methods are employed. Specifications 285,041 and 302,252 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) specifies also an oxybutyl amine as an oxyalkylamine which may be incorporated in the vat dye paste. This subject-matter does not appear in the Specification as accepted.